<template>
<button @click="isShowDemo = !isShowDemo">切换隐藏/显示</button>
  <Demo v-if="isShowDemo"></Demo>
  <hr>
</template>

<script>
import { ref } from 'vue'
import Demo from './components/Demo'
export default {
  name: 'App',
  components: {
    Demo,
  },
  setup() {
    let isShowDemo = ref(true)

    return {
      isShowDemo
    }
  }
}
</script>

<style>
</style>
